Challand, Helen J. frey50
Activities in the earth sciences Helen Challand; Illustrations by Len Meents - Chicago Childrens Press 1982 - 93 p. - Science activities .
Activities and experiments - Such as making charcoal, measuring shadows, and calculating the speed of sound - in the areas of astronomy, weather, and geology.
0-516-00506-5
Earth sciences - Experiments
Experiments
Astronomy--experiments--Juvenile literature
Weather--experiments--Juvenile literature
Geology--experiments--Juvenile literature
j550.78 Cha 25
Activities in the earth sciences Helen Challand; Illustrations by Len Meents - Chicago Childrens Press 1982 - 93 p. - Science activities .
Activities and experiments - Such as making charcoal, measuring shadows, and calculating the speed of sound - in the areas of astronomy, weather, and geology.
0-516-00506-5
Earth sciences - Experiments
Experiments
Astronomy--experiments--Juvenile literature
Weather--experiments--Juvenile literature
Geology--experiments--Juvenile literature
j550.78 Cha 25